<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>04员工表格练习</title>
</head>
<body>
<input type="text" placeholder="请输入员工姓名" id="i1">
<input type="text" placeholder="请输入员工工资" id="i2">
<input type="text" placeholder="请输入员工岗位" id="i3">
<input type="button" value="点我添加员工" onclick="addEmp()">
<hr>
<table border="1px">
    <caption>员工表</caption>
    <tr>
        <th>姓名</th>
        <th>工资</th>
        <th>岗位</th>
    </tr>
</table>
<script>
    //每次点击添加员工按钮时触发，点击一次，向表格中添加一行输入的员工数据
    function addEmp(){
        //1.拿到用户在输入框中输入的数据
        let uName = document.getElementById('i1').value;
        let uSalary = document.getElementById('i2').value;
        let uJob = document.getElementById('i3').value;
        //8.判断是否为空，如果为空，则弹出提示
        if(uName==''||uSalary==''||uJob==''){
            alert('请输入完整信息！');
            return;
        }
        //2.创建表格的tr对象
        let tr = document.createElement('tr');
        //3.创建当前行的3个td对象
        let nameTd = document.createElement('td');
        let salaryTd = document.createElement('td');
        let jobTd = document.createElement('td');
        //4.将拿到的数据装入到单元格td中
        nameTd.innerHTML = uName;
        salaryTd.innerHTML = uSalary;
        jobTd.innerHTML = uJob;
        //5.将准备好的td装到tr中
        tr.append(nameTd,salaryTd,jobTd);
        //6.将准备好的tr装到表格table中
        document.querySelector('table').append(tr);
        //7.清空输入框
        document.getElementById('i1').value = '';
        document.getElementById('i2').value = '';
        document.getElementById('i3').value = '';
    }
</script>
</body>
</html>